Cisco Firewall :: ASA5540 In Multiple-context SNMP / Icmp Doesn't Work
Jun 10, 2013
what´s going on with an asa540 configure in multiple-context mode. I Have a cacti server on my lan and now I´m try to monitoring the interface with snmp. When I try to get this information returns the error message:
CISCOASA/CONTEXTA#
JUN 11 2013 01:52:00: %ASA-1-1-6021: Deny UDP reverse path check from 10.6.6.6 to IP_SRV_CACTI on interface inside
JUN 11 2013 01:52:01: %ASA-1-1-6021: Deny UDP reverve path check from 10.6.6.6 to IP_SRV_CACTI on interface inside
If I try to ping returns the same error:
CISCOASA/CONTEXTA#
JUN 11 2013 01:56:09: %ASA-1-1-6021: Deny icmp reverse path check from 10.6.6.6 to IP_SRV_CACTI on interface inside
Following attached the conf of my asa My question is Why I can´t ping or even use snmp ?
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Jul 1, 2012
On my production environment I have a firewall with already two contexts defined (15% of CPU used) and I want to add a new one.
This context is going to use the same interfaces as the others contexts. When I will enable the context, can I have some sort of repercussion on these two context ?
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Jan 13, 2013
I have two ASA 5510 in an Active/Active failover configuration; On the first ASA I have a license for five security contexts, on the second one I have the default two. On the pair I configured seven security contexts and everything works as expected; so far so good. Let's suppose now that the first ASA (the one with the license for 5 contexts) goes up in smoke; all the contexts migrate to the surviving firewall and life is still good. But what happens if, for some reason, I need to reboot the second ASA before the first one is repaired? My guess is that it will come up with just its own license for two contexts and that I will not be able to operate all my virtual firewalls.
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Apr 28, 2013
I need to monitor with ping the inside sub-interface of my ASA5540, is that possible? I get the ICMP requests but no replys going out from the box.
I need to ping the 192.168.10.250 from the 192.168.5.55:
ASA Version 8.0(5)
interface GigabitEthernet0/1
nameif inside
[Code].....
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Apr 27, 2011
I am looking to deploy a cloud/borderless network solution and cannot get my head around how the licenses (AnyConnect Mobile and essentials) will be applied in a multiple context deployment. Any correct documentation.
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Mar 11, 2013
We already know that ASA 9.0 supports site-to-site VPN in multiple context mode. But remote access VPN isn't supported. Obviously, SSL-VPN is a very important feature for most multi-tenant deployment scenarios where each context acts as a border firewall towards the Internet for each tenant. The alternative to terminate all tenant remote-access VPNs in one context means that each tenant would have to be routable from the ASA, which of course isn't a reasonable requirement in most cases.
So, what I'd like to do is to deploy an ASA cluster, and provide remote access VPNs for each tenant, where the connectivity for each remote access group can be addressed with whatever IP address space, and that goes into it's own VRF in the back-end.
As far as I can tell, this isn't doable with the ASA, since multiple context mode prohibits the use of remote access VPN, and I can't think of any other work-around than either having individual firewalls running in single context mode for each tenant, or demand that all tenants are interoperable routing-wise and configure a separate ip address pool in a single context mode for each tenant.
Essentially, there's no good way to implement this with multiple virtual firewalls, using cisco firewalls?
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Feb 22, 2012
I am trying to configerate static switchports on our nexus 5548 (nx-os 5.1(3)N1(1)) over snmp.The support-list url... states that the CISCO- VLAN- MEMBERSHIP- MIB is supported.I can read the information, but if i try to set vmVlan or vmVlanType i get the message: "SET failed. ("ip-address"). Information: Not Writable."I can use set_request in general (e.g. CISCO-CONFIG-COPY-MIB). how to set the vlan and vlan-type over snmp?
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May 7, 2013
I have an ASA 5585 in transparent mode, multi-context. It seems that the option to configure a BVI in one of the traffic contexts isn't there. In other words, while I see the option to configure a bridge group interface in the admin context, no such option comes up in the traffic context.
[CODE]....
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Jan 8, 2012
i have 6509+FWSM(4.0.4) now i wanna use stite to stite and ez vpn in the fwsm (multiple context) multiple context mode in fwsm support ipsec vpn?
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Aug 12, 2012
I have a Failover pair of ASA5550's running ASDM 6.2(5) and ASA 8.2(2). Originally they were setup with 2 context's and an admin context but one of the contexts has now been removed. I would like to now migrate to single mode before I go about patching them to the latest software.
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Oct 19, 2011
I am running a ASA 5510 in multiple context mode. IOS 6.4(2), ASDM 6.4(5)106.
In older ios/asdm versions it was possible to backup the configuration using ASDM.
In 6.4(5)106 i am missing this feature (see attachment)
Is it possible to backup a multiple context firewall using ASDM and above mentioned software versions?
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Mar 8, 2013
I need to configure multiple context mode with active/standby failover solution.
Even after reading some Cisco documents I still can't understand if active/standby failover configuration has to be done within the admin context only or also within every single context (context-1, context-2 for example). In this case I have to allocate as failover interface a subinterface for each context (admin, context-1, context-2), right ?
Therefore a I have an other question: within the admin context, in a failover solution, do I have to allocate all interfaces I want to be moniotred, even though some will be used by context-1 only context and some others will be used by context-2 only context ?
An other question is: if active/standby failover configuration has to be done within each context, can I set regular failover within context-1 while stateful failover within context-2 ?
The last question is: can I use management interface within all 3 contexts ?
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Jun 13, 2012
I have a Fail over pair of ASA5550's running ASDM 6.2(5) and ASA 8.2(2). Originally they were setup with 2 context's and an admin context but one of the contexts has now been removed. I would like to now migrate to single mode before I go about patching them to the latest software.
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Jun 4, 2012
I have a pair of ASA 5520s in active/standby failover mode, single context. I'll be migrating to multiple context mode later this week. Do I need to break failover first? Or if I don't need to, should I? Or can I do this while maintaining failover? Can either of these scenarios will work (or fail). I'll be remote, doing my work via SSH, but have somebody local who can console in if needed.
Migration option #1
Log into active/primary ASA
Configure Multiple Context mode
Reboot both devices
Login to active/primary ASA
[code]....
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Dec 13, 2011
In order to meet our requirements we had to configure PAT for TCP 80 on 2 external IP addresses to one internal IP in DMZ. TCP port 80 is being translated for both external IP addresses and it works as expected. However, since we have migrated to ASA both external IP addresses don't respond to ICMP echo requests generating following error:
%ASA-3-106014: Deny inbound icmp src outside:<Source IP> dst outside:<Destination IP> (type 8, code 0)
Previously we have been using Cisco router to achieve the same objective and it worked well.I have noticed that when I add "same-security-traffic permit intra-interface" to a configuration the message mentioned above stops appearing in a logs.
As far as I can tell ASA sends packet back through outside interface, despite the fact that appliance advertises its mac address in response to arp request for the same external IP address.Is there any way to make ASA realise that it should respond to ICMP echo requests on external IP addresses that have forwarding setup?
I do realise that ICMP would work in 1-to-1 NAT scenario, but we can't apply 1-to-1 NAT for 2 external IP addresses to point to one internal IP address.
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Jul 17, 2012
I have 2xASA5510 with securityPlus license.i have configured 3 context and Active/Active Failover.Everything works fine. But also want to use rometeAccessVPN but couldn't fine anything for VPN. does it support VPN in multiple mode?
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Nov 7, 2012
My corporate internal network is currently fire walled by an FWSM module on a 6513 switch. We have each security zone (we have eight) assigned to a FWSM context and have ACLs set up between the contexts and the enterprise LAN/WAN. Is it possible to support fire walling between these zones within a single security context? The reason I am asking is that we would like to purchase a second FWSM for use as a standby, but do not want to cough up the ~ $12K for the context license. We will ultimately be transitioning to ASAs for internal security, so do not want to spend more than we need to.
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Aug 16, 2012
Does the pix-501 support multiple SNMP communities? Im trying to add a second one, but the original community string gets removed when I add the new one. If we can have multiple SNMP hosts, then I woud imagine you could have multiple strings. I thought it was like most switches and routers, which can have the following:
snmp-server community STRING1
snmp-server community STRING2
The Pix-501 is currently running on version 6.3(5).
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Sep 1, 2011
I have a customer with an ASA5505 where it will not reply to SNMP polls from any source, i have followed the configuration guide [URL].at and tested another ASA in our internal network and i have that working fine on our LAN, here is the snmp and logging sections of the show-run on the ASA, it there anything obvious im missing to make the SNMP work on this device?
snmp-server host outside 203.XX.75.122 community XXXX
snmp-server host outside 203.XX.84.196 community XXXX
snmp-server host outside 203.XX.86.82 community XXXX
snmp-server host outside 82.XX.244.3 community XXX
[Code] .....
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Feb 6, 2012
When using Cisco IOS c2960-lanbasek9-mz.122-50.SE3.bin we can delete line in SNMP group config with
no snmp-server group <group-name> v3 priv context vlan-<vlan-id>
without problems.
But, after upgrade on version c2960-lanbasek9-mz.122-58.SE2.bin there is output:
#####% Ambiguous command: "no snmp-server group <group-name> v3 priv context vlan-<vlan-id> "
It looks like some bug, but there is nothing in the bug toolkit.
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Sep 4, 2012
I have an ASA5540 running 8.4(3) which has CA and identity certificates from godaddy.com installed, identifying the ASA to VPN remote users (the are using the anyconnect client.) There is also a separate certificate server located on the inside LAN that is used for internal purposes. All client workstations have identity certs from this internal server.
We would like to be able to continue using the existing godaddy CA/identity certs to identify the ASA to the clients, but we'd like to use the internal CA server to identify the clients when they initiate the AnyConnect session to the ASA.
I have seen other postings that state you cannot have more than one vert on an interface, but this is a little different - only one cert needs to be used to identify the ASA. The other one is only to identify the users. The ASA did allow me to import the internal CA cert.
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Jul 26, 2012
We are using the newest release of AD Agent (1.0.0.32.1, built 598). The ASA Firewalls 5520 are having the software release 8.4(3)8 installed.When somebody tries to connect thru the Identity based firewalls from a citrix published desktop environment (PDI) the connection is not possible. Checking the ip-of-user mapping on the firewalls (show user-identity ip-of-user USERNAME) mostly doesn't show the mapping of the USERNAME and the PDI the user is logged in. The user-of-ip mapping of the PDIs IP-address shows mostly other users, which then are used to authenticate the acces thru the firewalls.
What is interesting, that on the AD Agent using "adacfg.exe cache list | find /i "USERNAME"" i can't see the PDIs IP-address neither because it is mapped to another user.Is Citrix Published Desktop environment supported to connect thru Identity based Firewalls? How AD Agent, Domain Controllers and Firewalls are working together? On the firewalls with "show user-identity ad-agent we see, the following:
-Authentication Port: udp/1645
-Accounting Port: udp/1646
-ASA Listening Port: udp/3799
Why Cisco does use 1645 and 1646 and not 1812 and 1813?The Listening Port is used for what purpose? we tried the AD Agent modes full- download and on-demand with the same effect.
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Jan 4, 2012
I know most QoS capabilities aren't available in multiple context mode, but I need to do some really simple policing on one of my contexts. I just want to apply a hard 20Mbps cap on an interface. I've seen a few places that suggest that basic policing is possible in multiple context mode, but apparently not by the normal commands.
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Nov 14, 2011
I have one outside interface with global IP address 1.1.1.1 and two inside.Both inside interfaces restrict and non_restrict have private IP addresses.I tried to filter some URLs on PIX515 IOS 7.2, only on restrict interface but my filter does not work.I can access prohibited URL from restrict interface. What's wrong in my URL filtering?
Here is my config:
PIX Version 7.2(2)
!
hostname pixfirewall
enable password 8Ry2YjIyt7RRXU24 encrypted
names
[code]....
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Jun 3, 2013
A couple of weeks ago, one of our ASA 5505s failed, and Cisco TAC shipped out a replacement. I was on vacation, and my assistant worked with TAC to get our backed-up configuration restored to the new hardware. This backup was just a copy & paste of the "show start," rather than an export done from ASDM. Anyway, since I got back on vacation I was able to iron out all the wrinkles from the configuration restore, except one. The remote access VPN isn't quite working. This VPN is only used in emergencies, when I can't access that branch office's network via our WAN.
What's happening is that clients are getting "authentication failed" messages when connecting. On Windows, it's an error 691. The VPN is set to authentication against RADIUS (Microsoft IAS server). The IAS server reports that the connection and authentication is successful. AAA RADIUS authentication tests on the ASA succeed, as do authentication & authorization LDAP tests. Basically, everything was working fine before we swapped in the new hardware, and I've gone over the configuration with a fine-toothed comb to ensure nothing's changed -- but clearly, I'm missing something. The new ASA is otherwise operating perfectly.
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Nov 30, 2012
I have a server in a network DMZ (IP 192.168.40.43) need to do discovery of other IP address to update the IPAM tool. It should not be done source NAT so I´m trying to use the configuration below with Policy NAT but isn´t working:
nameif ethernet1 inside security100
nameif ethernet5 dmz8 security55
!
ip address inside 10.56.12.93 255.255.252.0
[Code]....
It´s following message appears "% PIX-3-305005: No translation group found for icmp dmz8 srv: 192.168.40.43 dst inside: 10.38.36.50 (type 13, code 0)".
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Mar 18, 2011
I've got an ASA which has a number of contexts. They all share the same external interface, and in the interest of saving addresses I'm wondering if the standby address for each context is really necessary. I know that in active/passive the standby address is what allows the two to communicate and monitor that particular interface, however, in active/active I don't see the point as the context is either going to be on one or the other.
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Feb 15, 2012
I have a ASA 5510. I setup basic configuration to test internet with 2 ISPs. My first line works with out any problem. But my second line doesn't work. Even when i wipe the configuration, and setup only my second isp. Internet doesn't work. Can you tell me if there is anything wrong with this config?
CaaaA01# sh run
: Saved
:
ASA Version 8.3(1)
!
hostname CaaaA01
domain-name example.com
[code].....
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Dec 21, 2010
I'm trying to setup a L2TP VPN Connection on my ASA 5510 to connect with Android/Windows (Native Clients).I'm using the newest Releases:Cisco Adaptive Security Appliance Software Version 8.3(2) Device Manager Version 6.3(5)
My asa config just the interesting part:
crypto ipsec transform-set trans esp-3des esp-sha-hmac crypto ipsec transform-set trans mode transportcrypto ipsec security-association lifetime seconds 28800crypto ipsec security-association lifetime kilobytes 4608000crypto dynamic-map dyno 10 set transform-set transcrypto map vpn 20 ipsec-isakmp dynamic dynocrypto map vpn interface outsidecrypto isakmp enable outsidecrypto isakmp policy 10 authentication pre-share encryption 3des hash sha group 2 lifetime 86400no crypto isakmp nat-traversal
[code]....
If i try to connect with a Windows 7 Client (NOT behind NAT) I get the Error 691.
I see that Phase 1/2 are working with debug:
Dec 22 16:32:16 [IKEv1]: Group = DefaultRAGroup, IP = XXXXXX, PHASE 1 COMPLETED
Dec 22 16:51:25 [IKEv1]: Group = DefaultRAGroup, IP = XXXXXX, PHASE 2 COMPLETED (msgid=00000001)
Then I see this "Error":
Dec 22 16:51:26 [IKEv1]: Group = DefaultRAGroup, IP = XXXXX, Session is being torn down. Reason: L2TP initiated
I don't understand why it doens't work....I tried many templates from the net but nothings works.
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Jan 2, 2012
I need to be able to redirect some HTTP traffic to an Ironport WSA (for now) on a DMZ interface, the initial config I'm trying to test is along the lines of the following (don't have access to the ASA at the moment to cut-and-paste):
access-list 101 deny any any neq www
access-list 101 deny tcp host 10.0.2.2 any
access-list 101 permit tcp any any
route-map proxy-redirect permit 101
match ip address 101
set ip next-hop 10.0.2.2
Unfortunately the ASA does not take the "set ip next-hop" command, I get an invalid input error message and if I at the route map config prompt type "?" only the "metric" and "metric-type" commands are listed as available.
This happens both on 8.2 (ASA5510) and 8.4(2) (ASA5505). Since others are able to make this work, I assume there's something else on the ASA that I have to set to enable this command?
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Nov 16, 2011
Im looking for some clarification regarding running a Cisco ASA in transparent mode with multiple contexts. To give you an insight into the network design we have the following -
Collapsed Core/Aggregation Layer running Cisco 3750s. The 2 Cisco 3750s are using SVIs with HSRP for default gateways per customer with a total of 8 customers. Each customer is segregated into seperate VLANs with Cisco 2960 switches used in the Access layer. Each customer has 2 Cisco 2960 switches with redundant uplinks to the Core/Aggregation layer. Customers are spanning tree loadbalanced between core/aggregation switches.
What i need to now do is add two transparent firewalls into the mix in either an active/active or active/standby setup. I need the firewalls to support all 8 customers, therefore I am guessing they need to run in multiple context mode. Having read into this it has left me somewhat confused as to how to integrate them into the above setup as a bump in the wire so to speak.
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Jan 5, 2012
I have a problem with mi telephony server. My network topology is very simple. I have an ASA5505 connected to Internet throught an ISP. Behind ASA5505 I have a ToIP Server that operate well inside LAN network. However, when I try to register two or more extensions (Softphones) from Internet, Softphones some times it registers sucessfully, but some times doesn´t work.
The other hand, when softphones outside from LAN get register sucessfully in Asterisk server, is not possible that one of this calling the other one, and Asterisk server detects them as "UNREACHABLE". I don´t know if the problem are all commands of traffic inspect or if the problem is referenced to a particular UC proxy License.
These are configuration lines:
object-group service elastix-ports
service-object udp eq sip
service-object udp gt 10000
[Code]......
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May 12, 2013
I'm trying to build different content security scenarios for a potential deployment of ASA5500-X series firewall with CX module and ran into a trivial problem. A simple access policy has been configured to deny Skype. It's as simple as it sounds. To my surprise I don't see that it is being enforced.I have all my pending changes committed, events are now showing with hits, see attached print screens. Tried to start Skype on my PC with the source shown on the print screen it and don't see any effects of this policy.
As a side note, I know for sure that other type of filtering does work, i.e. I have configured a deny filter for gambling URL category and it seems to work nicely.
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